package com.company.learn.pinyin;

import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;


public class PinyinTool {

    HanyuPinyinOutputFormat format = null;

    public static enum Type {
        UPPERCASE,              // 全部大写
        LOWERCASE,              // 全部小写
        FIRSTUPPER              // 首字母大写
    }

    public PinyinTool() {
        format = new HanyuPinyinOutputFormat();
        format.setCaseType(HanyuPinyinCaseType.UPPERCASE);
        format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
    }

    /**
     * @param str 需要转换的字符串
     * @return
     * @throws BadHanyuPinyinOutputFormatCombination
     */
    public String toPinYin(String str) throws BadHanyuPinyinOutputFormatCombination {
        return toPinYin(str, "", Type.UPPERCASE);
    }

    /**
     * @param str       需要转换的字符串
     * @param separator 汉字之间的分隔符
     * @return
     * @throws BadHanyuPinyinOutputFormatCombination
     */
    public String toPinYin(String str, String separator) throws BadHanyuPinyinOutputFormatCombination {
        return toPinYin(str, separator, Type.UPPERCASE);
    }

    /**
     * 将str转换成拼音，如果不是汉字或者没有对应的拼音，则不作转换
     * 如： 明天 转换成 MINGTIAN
     *
     * @param str       需要转换的字符串
     * @param separator 汉字之间的分隔符
     * @param type      转换的方式
     * @return
     * @throws BadHanyuPinyinOutputFormatCombination
     */
    public String toPinYin(String str, String separator, Type type) throws BadHanyuPinyinOutputFormatCombination {
        if (str == null || str.trim().length() == 0)
            return "";
        if (type == Type.UPPERCASE) {
            format.setCaseType(HanyuPinyinCaseType.UPPERCASE);
        } else {
            format.setCaseType(HanyuPinyinCaseType.LOWERCASE);
        }
        String py = "";
        String temp = "";
        String[] t;
        for (int i = 0; i < str.length(); i++) {
            char c = str.charAt(i);
            if ((int) c <= 128) {
                py += c;
            } else {
                t = PinyinHelper.toHanyuPinyinStringArray(c, format);
                if (t == null || t.length == 0) {
                    py += c + (i == str.length() - 1 ? "" : separator);
                } else {
                    temp = t[0];
                    if (type == Type.FIRSTUPPER){
                        temp = t[0].toUpperCase().charAt(0) + temp.substring(1);
                    }
                    py += temp + (i == str.length() - 1 ? "" : separator);
                }
            }
        }
        return py.trim();
    }
}
